Buffalo County is a county located in the U.S. state of Wisconsin. As of the 2020 census, the population was 13,317. Its county seat is Alma. The county was created in 1853 and organized the following year.

Wisconsin's 3rd congressional district covers most of the Driftless Area in southwestern and western Wisconsin. The district includes the cities of Eau Claire, La Crosse, and Stevens Point, as well as many Wisconsin-based exurbs of the Minneapolis-St. Paul metropolitan area. It borders the states of Minnesota, Iowa, and Illinois. Republican Derrick Van Orden has represented the district since 2023.